Samsung CMOS

• FSI: frontside-illuminated. The light that reaches the photosensitive area is reduced because it needs to pass through multiple metal and dielectric layers.
• BSI: backside-illuminated. The light reaches the photosensitive area directly.
• ISOCELL: ISOCELL combines 3D-BSI with Front-side, Full-depth, Deep-Trench Isolation and Vertical Transfer Gate. This provides increased light sensitivity and higher color fidelity even in poor lighting conditions.
• ISOCELL Plus: ISOCELL Plus replaces ISOCELL's metal grid barriers with an innovative new material developed by Fujifilm. This minimizes optical loss and light reflection, providing higher color fidelity and up to a 15% enhancement in light sensitivity compared to ISOCELL.

• BW also known as Monochrome. No color filter array.
• RGB also known as Bayer filter or RGGB. Features a repeating 2×2 pattern with 1 red, 2 green and 1 blue pixels.
• Tetracell also known as Quad Bayer or 4-cell. Features a repeating 4×4 pattern with 4 red, 8 green and 4 blue pixels. For darker scenes, signal processing can combine data from each 2x2 group, essentially like a larger pixel. For brighter scenes, signal processing can convert the Tetracell into a conventional RGB filter to achieve 4x higher resolution. Resolution & pixel size listed below is after re-mosaic signal processing.
• Nonacell. Similar to Tetracell, but with 3x3 groups and a 6×6 pattern with 9 red, 18 green and 9 blue pixels.